These are my stair sketches and 3D models of them for last weeks model. This set of stairs is slabs of stone cantilevered out of the wall. I wanted it to look as though they were floating, but added the glass balustrade as a safety measure.

This set of stairs was originally meant to be made from rendered concrete, but i think the wooden floorboards blend in better with the floors from both the ground and below-ground level. I like the heaviness of the block of the stairs, but it may be more space efficient to create a room underneath in future.